Piston



if R. WARREN PISTON Filed NOV. 18, 1921 1271/221 for:

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Patented Feb.. 27, T9723..

UNTTEE STATES PATENT @EETCEO Jenn n. wennen, lconirnnv,

0F GRAND RAPIDS, MICHIGAN, ASSJIGNOR T0 TEE FSTON RING OF '.MUSEEGON, MCHIGAN, A CORPORATION 0F MICHKGAN.

FISTON.

,Application led November l, 1921. Serial No. 516,016.

To all whom t may cof/wem.'

Be it known that Grand Rapids, in State of Michigan, useful llmprovements R. VVAR'REN,

l, JOHN residing at i Pistons, of which the following is a specification.

rlilfie. present invention ielates to pistons;y

and its object is to provide a piston having a body member and member, which a surrounding sleeve members may be readily connected and. in such manner that leakage between them will be revented.

This and any otier objects hereinafter appearing are tion is preferably attained by,

embodied in, the structure and the invenhereinafter particularly described and illustrated by the accom which Figure 1 is a Figure 2 is a panying. drawing, in

top plan view of a piston; sideview thereof;

Figure 3 is an axial sectional view of the same taken on a plane corresponding to line 3--3 of Figures 2,4'and 5, and showing a portion of the cylinder containing the piston;

Figure piston, the piston Figure 5` is a 4 is a bottom plan view of the rod being omitted; transverse sectional view of the'body member of the piston taken on a plane corresponding to line 5 5 of Fig- Figure 6 but showin isa view similar tol Figure 2, a modi ed construction;

Figure 7 is a sectional view of a fragment of the same taken 'on a plane corresponding l to line 7-*47 of Figure 6; and

`but showing a Figure 8 is `an axial sectional view of a portion of the piston taken on the same plane as that on whi cli Figure 3 is taken,

by the 4drawings and for detailed description in the body of this a piston specification,

reciprocating in acylinder 1 of an internal-combustion engine is shown. l member 2 carrying is roekably mounted cated at 4. The piston rlihis pistonooniprises a 'body the piston pin 3 on which the piston rod indicomprises also the sleeve member 5 surrounding the body member and, being resiliently ino' on the interior of' the body member 2 has at extending continuous cylinder. The one end an outwardly dange 6 against whic expansive, bean' the corresponding end 7 of the sleeve membei" abuttingly contacts tightly; rllhe sleeve member is held in such contact with this flange by the mutual engagement' of the radially extending ortions 8 of the body memberI and 9 of t e sleeve member. As seen inv Figures 3 and 4, these portions' 8 are spaced apart angularly and the portions 9 are similarly spaced, so that in assembling the two members 2 and 5, the portions 8 are ,passed between the portions 9 as the members 2 and 5 are interrelatively moved in their axial direction, whereupon these members are interrelatively turned about their axes, so that said portions are moved to their mutually engaging position seen in Figures 3 and 4. rFhese radially extending portions, insteadof being divided into the spaced apart sections seen in Figures 3 and 4, may however be fashioned in continuous annular form as seen at 81 and 91 in Figure 8,- and their surfaces 10, 11 may be inclined as shown, so that the sleeves member 5 may be expanded to lpermit its assembling with the body member 2 by being pushed over its lower end, whereupon the sleeve member contractin will cause the portions 81 and 91 to lockingly engage.

The sleeve member is resiliently expansible-a'nd contractible, having a lon itudinallydisposed slit 12, a portion 13 t ereof extendingy in the transverse direction of the sleeve member. ln this portion 13 of the slit 12 the parts of the sleeve member tightly contact each other, but slidably, so that leakage from that portion lof the slit 12 which is at oneside of the po-rtion 13 to that portion of said slit which is at the opposite side of the ortion 13 -is prevented, said portion 13 registering in the assembled position of the' members 2 and 5 withl the body members flange 14 as seen in Figure 3 or` a adress the slit 12 'and containing a dam plate 16- closely tting but slidable therein to permit the transverse expansion and con-1 traction of the sleeve member, as seen in Figures 6 and 7 Tn order to maintain the end 7 of the sleeve member in tight contact with the'body members lange, to prevent leakage between said members, "the sleeve member is longitudinally contractible and expansible resiliently. To this eiild, the

slit 15 may be provided extending sleeve member has a series of transversely lill@ a second series of like slits 19 similarly disposed, the slits of one series being staggered relatively 'to those of the other series, as seen in Figure 2. A cotter pin 20 holds the members 2 and 5 against interrelative turning movement.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of constructionof the particular embodiment thereof illustrated by the drawings or hereinbefore described.

l' claim:

1. In a piston; a body member carrying the piston rod and having a radially extending flange and a radially extending portion; a ldiametrically expansible and contractible sleeve member surrounding the body member and having a radially extending portion adapted to engage the body members said portion topress in the 4pistons longitudinal direction an end of the sleeve member in tight contact with said Harige.

2. In a piston; a body member carrying the iston rod and having a radially extending flange and a radially extending portion; a diametrically expansible and contractible sleeve member surrounding the body member and having a radially extending portion adapted to engage the body members said portion to hold an end of the sleeve member in. tight contact with said flange; at least oneiof said radially extending gortions having an inclined surface.

n a piston; a body member carrying the iston rod and having a radially extending flange and radially extending portions angularly spaced apart; a diametrically expansible yand contractible sleeve member surrounding the body4 member and the ends of the piston rod Aand having radially extending portions. angularly spaced apart and adapted to pass between the body members said portions and to engage' the same by the interrelative turning movement t p the piston 4rod and having of said members about their longitudinal 'axis to hold an end of'the` sleeve member in tight contact with said flange.

4. In a piston; a body member "carrying the piston rod and havin a radially extending flange yand a ra ially extending ally the body members said portion to hold an portion; a longitudinally-split sleeve mem ber-surrounding the body member and the ends of the piston rod and having a radiextending portion adapted to engage end of the sleeve member in tight contact with said flange.

5. In a piston; a body member carrying the piston rod and having a radially lextending flangev and a radially extending portion; a diametrically and longitudinally expansible and contractible resilient sleeve member surrounding the body member and having a radially extending portion adapted to engage the body members said portion to press an end of the longitudinally compressed sleeve member in tight contact with' said, flange. 6. In a piston; a body member carrying the piston rod and having a radially extending flange and a radially extending portion; a diametrically and longitudinally expansible and contractible resilient sleeve member surrounding the body member and having a series of transversely extending yslits disposed end to end and a second series of transversely extending slits disposed end to end, the slits of one series being staggered relatively to those of the other series, the

sleeve member having also a radially ex- -jtending portion adapted to engage the body members said portion to hold an end of the llongitudinally compressed sleeve member in 'tight contact with said flange.

7. In a piston; a body member carrying the piston rod and havin a radially extending flange and a radially extendingl portion; a sleeve member surroundin the body member and having a longitudinally disposed sl-it and a second slit extending 'thereacross having a dam plate closely fitting. `lout slidable therein to prevent leakage. between the portions of the first mentioned lslit which are on the opposite sides of said,

plate, the'sleeve member having also raIdi-i Ially extendingl portion adapted to engage the body members said portion to hold an4 Aend of the sleeve member in tight contact with said flange.

8. In a piston; a body meintierfcarrying av radially extending flange; a diametrically and longitudinally'expa'nsible and contractible resilient sleeve member surrounding the body lmember;y means for holdin an end of the longitudinally compressed s eeve member -i'n Atight contact with said flange.

l .In testimony whereof I' have hereunto set my hand at Grand Rapids, Michigan, this 2nd day of November, 1921.

.. v JOHN R. WARREN. 

